I'm getting a fair bit of mains hum when I connect this mic to the Tascam DP32sd I've just bought. I don't get any hum when any of my other condenser or dynamic mics are connected to the DP32 and neither is there any hum when this mic is connected to my DP008EX. If I connect the stereo out jacks of the DP32sd to an amp the hum disappears so it seems to be an odd grounding problem. I don't always have an amp nearby to plug in to - is there any other way of getting rid of this hum? I wonder if it has anything to do with the dc supply t o the recorder and lack of earthing? I had the mic serviced only last year.